Updated openstack/openstack
Project: openstack/neutron  374c601a1daa3173959f1acaa35e06544459b771

Cleanup and refactor methods in unit/test_security_groups_rpc

We had strings repeating all along the code which already were
in constant form, those have been refactored. Also global configuration
changes are now handled by functions to enhance code readability.

Change-Id: I0d4e508cda2537abe431f04a278ba2e1d2f5d97d